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McGraw Hill Integrated II, 2012

MH

McGraw Hill Integrated II, 2012 View details

1. Ratios and Proportions

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Exercise 27 Page 547

You can solve the proportion by using Cross Products Property.

3

Practice makes perfect

To solve the proportion, we will start by utilizing the Cross Products Property. Remember that we will need to treat 3x-1 and 2x+4 as single quantities in the cross multiplication process.

3x-1/4=2x+4/5

Cross multiply

(3x-1)5=4(2x+4)

From here, we will continue solving for x by using the Distributive Property and the Properties of Equality.

(3x-1)5=4(2x+4)

Distribute 5

15x-5=4(2x+4)

Distribute 4

15x-5=8x+16

LHS+5=RHS+5

15x=8x+21

LHS-8x=RHS-8x

7x=21

.LHS /7.=.RHS /7.

x=3

Therefore, the solution for the given equation is x=3.

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Exercises p.546-549